Camera lens module

ABSTRACT

Disclosed herein is a camera lens module. The camera lens module in accordance with an embodiment of the present invention includes a vibration correction carrier, a rolling unit disposed in parallel to a direction vertical to an optical axis and configured to support the vibration correction carrier, a lens barrel carrier disposed on a side opposite the vibration correction carrier based on the rolling unit, and a base configured to mount the vibration correction carrier and the lens barrel carrier on the base.

CROSS REFERENCE TO RELATED APPLICATIONS

The present application claims the benefit of Korean Patent ApplicationsNos. 10-2013-0128152 and 10-2014-0005285 filed on Oct. 25, 2013 and Jan.15, 2014, respectively. The applications are incorporated herein byreference.

TECHNICAL FIELD

Various embodiments of the present invention relate to a camera lensmodule mounted on a mobile electronic device.

RELATED ART

With the recent development of a mobile communication technology, one ormore small-sized and lightweight camera lens modules are adopted in thebody of a portable terminal, such as a commercial smart phone.

In particular, a recent portable terminal requires a high-capacity andhigh-performance camera lens module. For this reason, a camera lensmodule that is equipped with various functions and that is comparable toa digital camera (e.g., DSLR) level is actively developed. Such variousfunctions included in the camera lens module mounted on the portableterminal include a hand vibration correction function in addition to anautomatic focus function and a zoom function.

An example of a conventional camera lens module including a handvibration correction function may include Korean Patent Application Nos.2010-106811 and 2011-0140262. However, as a portable terminal requiresboth the high function and the small size, additional elements forproviding such a high function need to be further reduced in size.

In particular, a camera lens module equipped with a hand vibrationcorrection function needs to perform precise hand vibration correctionusing two or more orthogonal resultant forces for such hand vibrationcorrection. However, there is a problem in that precise and fast handvibration correction is difficult because the size or number of drivingunits needs to be minimized. That is, there is a problem in that invibration correction driving controlled by resultant forces in two ormore directions, such vibration correction driving is performed greaterthan a range that needs to be controlled in a process of applying theresultant forces or unnecessary rotation is excessively generated. Sucha problem is a factor that deteriorates the accuracy and speed ofvibration correction driving, and it needs to be solved in order toperform precise and fast vibration correction driving.

As a result, a camera lens module requires an apparatus capable ofpreventing a lens from rotating in one direction when the lens is drivenin a straight line in an optical axis direction and simultaneouslyplacing the center of the lens (i.e., centering) in the optical axis ofthe lens by rotating the lens in a direction opposite the direction ofthe rotation.

SUMMARY

Accordingly, various embodiments of the present invention provide asmall-sized camera lens module capable of fast and accurate handvibration correction driving by suppressing rotatory power that isexcessively applied out of a range of driving force when the camera lensmodule performs hand vibration correction driving.

In accordance with various embodiments of the present invention, acamera lens module may include a vibration correction carrier, a rollingunit disposed in parallel to a direction vertical to an optical axis andconfigured to support the vibration correction carrier, a lens barrelcarrier disposed on a side opposite the vibration correction carrierbased on the rolling unit, and a base configured to mount the vibrationcorrection carrier and the lens barrel carrier on the base.

Furthermore, in accordance with various embodiments of the presentinvention, the camera lens module further includes an Automatic Focus(AF) driving unit disposed between the base and the lens barrel carrierand configured to move the lens barrel carrier along the optical axis.

The AF driving unit may include an automatic focus magnet provided in afirst surface of the lens barrel carrier, an auxiliary base provided inone surface of the base and configured to face the automatic focusmagnet, an automatic focus coil and an automatic position sensorprovided in the auxiliary base and disposed to face the automatic focusmagnet, and a camera lens module configured to comprise an AF flexiblecircuit provided in the auxiliary base.

In accordance with various embodiments of the present invention, theautomatic focus driving unit in addition to the driving unit of thevibration correction carrier can be efficiently disposed in a limitedspace.

Furthermore, there is an advantage in that driving power and powerconsumption can be minimized by suppressing a malfunction of thevibration correction carrier, such as exceeding a vibration correctionrange or excessive rotation, because a plurality of segmented yokesforms a single yoke unit.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an exploded perspective view illustrating the configuration ofa camera lens module in accordance with various embodiments of thepresent invention;

FIG. 2 is a perspective view illustrating a state before a vibrationcorrection carrier, a vibration correction driving unit, and a rollingunit that belong to the elements of the camera lens module in accordancewith various embodiments of the present invention are combined;

FIG. 3 is a perspective view illustrating that the vibration state of alens barrel is corrected on the basis of an X axis in the camera lensmodule in accordance with various embodiments of the present invention;

FIG. 4 is an enlarged perspective view illustrating that the vibrationstate of a lens barrel is corrected on the basis of the X axis in thecamera lens module in accordance with various embodiments of the presentinvention;

FIG. 5 is a perspective view illustrating that the vibration state of alens barrel is corrected on the basis of an Y axis in the camera lensmodule in accordance with various embodiments of the present invention;

FIG. 6 is an enlarged perspective view illustrating that the vibrationstate of a lens barrel is corrected on the basis of the Y axis in thecamera lens module in accordance with various embodiments of the presentinvention;

FIG. 7 is a cross-sectional view illustrating a different deployment ofthe position sensor of the camera lens module in accordance with variousembodiments of the present invention; and

FIG. 8 is a perspective view illustrating the camera lens moduleassembled in accordance with various embodiments of the presentinvention.

DETAILED DESCRIPTION

Electronic devices to which a camera lens module in accordance withvarious embodiments of the present invention may be applied may include,for example, all types of information communication devices andmultimedia devices, such as palm-sized Personal Computers (PC), PersonalCommunication Systems (PCS), Personal Digital Assistants (PDA),Hand-held PCs (HPC), Portable Multimedia Players (PMP), MP3 players,navigators, game machines, laptop computers, netbooks, billboards, TV,digital broadcasting players, and smart phones, and application devicestherefor as well as all types of mobile communication terminals thatoperate in accordance with communication protocols corresponding tovarious communication systems.

FIG. 1 is an exploded perspective view illustrating the configuration ofa camera lens module 10 in accordance with various embodiments of thepresent invention, FIG. 2 is a perspective view illustrating a statebefore a vibration correction carrier 15, a vibration correction drivingunit, and a rolling unit 100 that belong to the elements of the cameralens module 10 in accordance with various embodiments of the presentinvention are combined, and FIG. 8 is a perspective view illustratingthe camera lens module 10 assembled in accordance with variousembodiments of the present invention.

The configuration of the camera lens module 10 is described below withreference to FIGS. 1 and 2. The camera lens module 10 includes a base11, a lens barrel carrier 14, an automatic focus driving unit, avibration correction carrier 15, a vibration correction driving unit,and a rolling unit 100.

The base 11 provides a space in which the lens barrel carrier 14, theautomatic focus driving unit, the vibration correction carrier 15, thevibration correction driving unit, and the rolling unit 100 arecombined, and the location relationships between the elements are asfollows.

The lens barrel carrier 14 is provided on the base 11 so that thevibration correction carrier 15 can be disposed.

The automatic focus driving unit is disposed between the base 11 and thelens barrel carrier 14 and is configured to move the lens barrel carrier14 in an optical axis.

The vibration correction carrier 15 is placed on the lens barrel carrier14 so that a lens barrel 13 is provided in the lens barrel carrier 14.

The vibration correction driving unit is provided between the base 11and the vibration correction carrier 15 and is configured to correct theequilibrium state of the lens barrel carrier 14.

The rolling unit 100 is disposed between the vibration correctioncarrier 15 and the lens barrel carrier 14 in parallel to a verticaldirection, that is, the direction of the optical axis, so that thevibration correction carrier 15 performs vibration correction driving onthe lens barrel carrier 14 in response to the rolling operation of therolling unit 100.

Furthermore, the vibration correction driving unit includes vibrationcorrection magnets 101 and 102, vibration correction coils c2 and c3,and yoke units 103 corresponding to the respective vibration correctionmagnets 101 and 102. In particular, a plurality of the yoke units 103may be configured to be separated from each other so that the regions101 a and 101 b, 102 a and 102 b of the vibration correction magnets 101and 102 included in the vibration correction driving unit are segmentedand disposed.

If the yoke units 103 are disposed so that they face the vibrationcorrection magnets 101 and 102 and segment the regions 101 a and 101 b,102 a and 102 b of the magnets as described above, the vibrationcorrection carrier 15 can be prevented from being rotated in onedirection when vibration correction driving is performed andsimultaneously can be rotated in a direction opposite the direction ofthe rotation, thereby providing force that maintains the position of thecenter (i.e., centering). Accordingly, unnecessary rotation occurringwhen vibration correction driving is performed can be suppressed.

That is, the yoke units 103 include first and second yokes 103 a and 103b disposed to face the respective regions 101 a and 101 b, 102 a and 102b divided based on the center A1 of the vibration correction magnets 101and 102 and separated from each other. Accordingly, the centering of thevibration correction carrier 15 can be easily realized by rotating thevibration correction carrier 15 in one direction and simultaneouslyrotating the vibration correction carrier 15 in a direction opposite thedirection of the rotation.

Furthermore, the lens barrel carrier 14 includes at least one rotationprevention member 105. The at least one rotation prevention member 105is combined with a groove 105 a formed in he vibration correctioncarrier 15 when the vibration correction carrier 15 rotates andconfigured to prevent the collision of the vibration correction carrier15 while suppressing the rotatory power of the vibration correctioncarrier.

The configuration of the camera lens module is described in more detailbelow with reference to FIGS. 1 and 2.

FIGS. 1 and 2 illustrate only the external appearance of the camera lensmodule 10 and thus illustrate only the upper parts of the base 11, theauxiliary base 16, the exterior casing 12, the first and the secondflexible circuit boards P1 and P2, and the lens barrel 13 of the cameralens module 10. In the drawings, a three-dimensional X/Y/Z coordinatesystem has been illustrated, a “Z axis” corresponds to a directionvertical to the camera lens module 10 and means an optical axis alongwhich the lens barrel 13 moves, an “X axis” corresponds to a directionhorizontal to the camera lens module 10 (i.e., a direction vertical tothe optical axis), and an “Y axis” corresponds to a directionperpendicular to the camera lens module 10 (i.e., the direction verticalto the optical axis and the direction vertical to the X axis). TheAutomatic Focus (AF) driving unit to be described later provides drivingforce that controls a focus by moving the lens barrel 13 along theoptical axis. An Optical Image Stabilizer (OIS) driving unit acts on thevibration correction carrier (illustrated in FIG. 3) in the XYdirection, that is, the direction vertical to the optical axis, andprovides driving force that corrects the equilibrium stat in thehorizontal direction.

The configuration of the camera lens module 10 in accordance withvarious embodiments of the present invention is described below withreference to FIG. 1. Lightweight, shortness, and a small size for thecamera lens module 10 is sought. For example, the mounting space of thedriving units (including the AF driving unit and two vibrationcorrection driving units to be described later) that occupy most of theinternal mounting space of the camera lens module 10 is optimized. Inparticular, in order to reduce the size of the camera lens module 10, asingle AF driving unit is disposed on one surface of the camera lensmodule 10, and the two vibration correction driving units are disposedin two of the edge regions of the camera lens module 10.

In general, the known lens barrel 13 is cylindrical, and the exteriorcasing 12 has a polyhedron shape, more specifically, a rectangular orsquare shape. If the lens barrel 13 is housed in such an exterior casing12, four empty spaces are generated in the four edge regions of theexterior casing 12. The driving units are mounted on some of the fourempty spaces in order to achieve a reduction in the size.

In an embodiment of the present invention, in order to optimize themounting feature of components configured in the camera lens module 10,the AF driving unit is disposed in a region on one side of the exteriorcasing 12 of the camera lens module 10, and first and second vibrationcorrection driving units are respectively disposed in two first andsecond edge regions of the four empty spaces included in the four edgeregions. In particular, in an embodiment of the present invention, an AFoperation and a vibration correction operation are performed in thestate in which the vibration correction carrier 15 has been disposed insuch a way as to perform a rolling friction operation on the lens barrelcarrier 14.

The camera lens module 10 has an external appearance of an approximatelyrectangular shape and includes the exterior casing 12, the base 11, theauxiliary base 16, the lens barrel 13, the at least one vibrationcorrection unit (including the vibration correction carrier 15 and thevibration correction driving unit), an automatic focus control unit(including the lens barrel carrier 14 and the AF driving unit), the oneor more flexible circuit boards P1 and P2, and a guide device configuredto guide the at least one lens barrel 13 along the optical axis.

The exterior casing 12 is combined with the base 11 and is configured toreceive major components and to perform a housing function forprotecting the received components against the outside. The exteriorcasing may be made of metal and may be responsible for a shieldfunction. The two flexible circuit boards P1 and P2 are externally drawnfrom the exterior casing 12 so that they are electrically connected toan external power source (not illustrated). One circuit board P1 is avibration correction flexible circuit board extended from the vibrationcorrection unit, and the other circuit board P2 is an image sensorflexible circuit board.

The lens barrel 13 is configured to have a cylindrical shape and ismoved by the AF driving unit along the optical axis, thereby controllingthe focus of the lens. The lens barrel carrier 14 is fully received inthe base 11. A magnet mounting groove 140 of a flat rectangular shape isprovided on the outer circumferential surface of the magnet mountinggroove 140.

Furthermore, the lens barrel carrier 14 is guided by a pair of guidedevices along the optical axis. The pair of guide devices includes aknown guide unit and a plurality of ball bearings b1. The lens barrel 13may be configured to be separated from or combined with the lens barrelcarrier 14 or to be integrated with the lens barrel carrier 14.

In accordance with an embodiment of the present invention, devices fordriving the camera lens module 10 include a single AF driving unit andtwo vibration correction driving units. In an embodiment of the presentinvention, the AF driving unit is illustrated as including a single AFdriving unit.

Furthermore, two vibration correction driving units are disposed on onesurface of a side opposite one surface where the AF driving unit isposition on the basis of the optical axis in such a way as to beseparated from each other. In an embodiment of the present invention,the vibration correction driving unit is illustrated as including thefirst and the second vibration correction driving units, and the firstand the second vibration correction driving units are illustrated asbeing mounted on the first and second edges, but are not limited to theedge regions. For example, two or more vibration correction drivingunits may be installed if they can be mounted on empty spaces within thecamera lens module 10.

The configuration of the vibration correction driving unit is describedbelow. The vibration correction driving units are disposed in at leasttwo of the vibration edge regions, respectively, thus correcting thehand vibration state of the vibration correction carrier 15.

That is, the first and the second vibration correction driving units aredisposed in the first and the second edge regions of the camera lensmodule 10, respectively. In this case, the first and the second edgeregions refer to both edge regions on the opposite side of the AFdriving unit, that is, both edges of the vibration correction carrier 15on which the first and the second vibration correction magnets 101 and102 are mounted. In other words, the first and the second edge regionsrefer to respective spaces including both edge regions of the base 11 onthe opposite side of the AF driving unit.

The first and the second vibration correction driving units are disposedto face each other in the central direction of the optical axis in thefirst and the second edge regions that confront the AF driving unit. Thefirst and the second vibration correction driving units aresymmetrically disposed in the first and the second edge regions,respectively, in such a way as to face each other, thus correcting theequilibrium state (i.e., the XY axes) of the vibration correctioncarrier 15 along the optical axis through the resultant force ofelectromagnetic force generated from the first and the second vibrationcorrection driving units.

The first vibration correction driving unit includes the first vibrationcorrection magnet 101. The first vibration correction magnet 101 ismounted on the mounting groove provided in an outer surface of thevibration correction carrier 15 and is disposed in the first edge regionof the vibration correction carrier 15 in such a way as to face thecentral direction. The first vibration correction driving unit furtherincludes a first vibration correction coil c2. The first vibrationcorrection coil c2 is disposed in the first edge region of the base 11in such a way as to face the central direction and is spaced apart fromthe first vibration correction magnet 101 in such a way as to face thefirst vibration correction magnet 101. The first vibration correctiondriving unit further includes a first position sensor h1 disposed in thefirst edge region of the base 11 and disposed on the back of the firstvibration correction coil c2 or in a coil hollow unit. The first edgeregion may be assumed to have a triangular prism shape that isapproximately parallel to the direction of the optical axis.

When an electric current is applied to the first vibration correctioncoil c2, electromagnetic force is generated by the first vibrationcorrection magnet 101 and the first vibration correction coil c2. Theelectromagnetic force becomes one piece of driving force for correctingthe vibration of the lens barrel 13 in the XY axes. In this case, thefirst position sensor h2 may be a hall sensor.

The second vibration correction driving unit includes the secondvibration correction magnet 102. The second vibration correction magnet102 is mounted on a mounting groove provided in an outer surface of thevibration correction carrier 15 and is disposed in the second edgeregion of the vibration correction carrier 15 in such a way as to facethe central direction. The second vibration correction driving unitfurther includes the second vibration correction coil c3. The secondvibration correction coil c3 is disposed in the second edge region ofthe base 11 in such a way as to face the central direction and is spacedapart from the second vibration correction magnet 102 in such a way asto face the second vibration correction magnet 102. The second vibrationcorrection driving unit further includes a second position sensor h2disposed in the second edge region of the base 11 and disposed at theback of the second vibration correction coil c3 or in a coil hollowunit. Likewise, the second edge region may be assumed to have anapproximately triangular prism shape.

When an electric current is applied to the second vibration correctioncoil c3, electromagnetic force is generated by the second vibrationcorrection magnet 102 and the second vibration correction coil c3. Theelectromagnetic force becomes the other piece of driving force forcorrecting the vibration of the lens barrel 13 in the XY axes. In thiscase, the second position sensor h2 may be a hall sensor. Accordingly,the vibration correction carrier 15 may correct the vibration state ofthe lens barrel on the basis of the XY axes by means of the resultantforce of the first and the second vibration correction magnets 101 and102 and the first and second vibration correction coils c2 and c3.

The first position sensor h1 is disposed in the outskirts of the firstedge region. More specifically, the first position sensor h1 is disposedat the back of the first vibration correction coil c2 and is disposed todirectly face the first vibration correction magnet 101 through a firstaperture within the first vibration correction coil c2. Furthermore, thesecond position sensor h2 is disposed in the outskirts of the secondedge region. More specifically, the second position sensor h2 isdisposed at the back of the second vibration correction coil c3 and isdisposed to directly face the second vibration correction magnet 102through a second aperture within the second vibration correction coilc3.

Furthermore, the first and the second vibration correction positionsensors h1 and h2 may be received in the respective internal spaces ofthe first and the second vibration correction coils and mounted in sucha way as to face the first and the second vibration correction magnets101 and 102. FIG. 7 illustrates a different deployment of such aposition sensor. That is, the first and the second position sensors h1and h2 of FIG. 1 are illustrated as being disposed at the backs of thefirst and second vibration correction coils, whereas first and secondposition sensors 222 and 224 of FIG. 7 are illustrated as being disposedin the respective internal housing spaces of first and second vibrationcorrection coils 221 and 223. In this case, the first and secondvibration correction cols 221 and 223 are coreless type coils andinclude the housing spaces therein, and thus the first and the secondposition sensors 222 and 224 are disposed in the respective internalhousing spaces of the first and second vibration correction cols 221 and223 so that they directly face the first and second vibration correctionmagnets 225 and 226. Such a deployment structure further improves acomponent mounting feature.

Meanwhile, the AF driving unit is disposed between the auxiliary base16, combined with one surface of the exterior casing 12 that faces theAF driving unit, and one side of the lens barrel carrier 14 and isconfigured to move the lens barrel 13 along the optical axis.

The AF driving unit includes an automatic focus magnet m1 placed on theouter circumferential surface of the lens barrel carrier 14 and mountedin parallel to one surface of the casing 12, the automatic focus coil c1disposed in the auxiliary base 16 and disposed to face the automaticfocus magnet m1, and a driving Integrated Circuit (IC) disposed besidethe automatic focus coil c1. When an electric current is applied to theautomatic focus coil c1, the lens barrel 13 is moved along the opticalaxis by electromagnetic force generated by the automatic focus coil c1and the automatic focus magnet m1. Accordingly, a focal distance betweenthe lens and an image sensor (not illustrated) is automaticallycontrolled.

The first position sensor h1 may be disposed in the internal housingspace of the automatic focus coil c1 or disposed beside the automaticfocus coil c1 and may be included in the driving IC. The first positionsensor h1 may include a hall sensor.

The AF driving unit includes an automatic circuit board P3 disposed inthe internal surface of the auxiliary base 16 and the automatic circuitboard P2 disposed on a top surface of the base 11. The automatic circuitboard P3 and the vibration correction circuit board P1 are made offlexible materials. The automatic circuit board P1 is attached to theauxiliary base 16 along the optical axis, and the vibration correctioncircuit board P2 is attached on a surface of the base 11 in a directionvertical to the optical axis.

In FIG. 1, reference numeral “F” denotes an “IR filter”, and referencenumeral denotes an “image sensor”. Furthermore, reference numeral “s1and s2” denote stoppers.

Meanwhile, the vibration correction carrier 15 includes a hollow body150 configured to have an internal space for receiving the lens barrel13 in the direction of the optical axis and one or more first supportbodies 151 protruded in an outer circumference direction from the bottomof the hollow body 150 and spaced apart from each other. Furthermore,the vibration correction carrier 15 is mounted in an open part of thelens barrel carrier 14 in such a way as to face the base 11. The hollowbody 150 of the vibration correction carrier surrounds the outercircumferential surface of the lens barrel 13 and has a gap thereinbecause the lens barrel 13 is received in the hollow body 150. Anopening is formed between the first support bodies 151, and thus the oneor more yoke units 103 directly face the first and the second vibrationcorrection magnets 101 and 102. Accordingly, gravitational force betweenthe yoke units 103 and the first and the second vibration correctionmagnets 101 and 102 enables the vibration correction carrier 15 to becentered on the automatic carrier 14.

Meanwhile, the rolling unit 100 is provided between the top of the lensbarrel carrier 14 and the bottom of the vibration correction carrier 15and is configured to center the position of the vibration correctioncarrier 15. The rolling unit 100 includes the first and the secondvibration correction magnets 101 and 102, the one or more yokes 103, anda plurality of ball bearings 104. The ball bearings 104 are spaced apartfrom each other at specific intervals, disposed between the lens barrelcarrier 14 and the vibration correction carrier 15 in such a way as tobe brought in contact with them, and configured to support the vibrationcorrection carrier 15.

The yoke units 103 are disposed to be symmetrical to the lens barrelcarrier 14 and are disposed to face the first and the second vibrationcorrection magnets 101 and 102, respectively, which form the first andthe second vibration correction driving units. The yoke units 103 may bemade of a magnetic substance, for example, metal. The position of thevibration correction carrier 15 can be stably centered on the ballbearings 104 through gravitational force between the yoke units and thefirst and the second vibration correction magnets 101 and 102, and theposition of the center of the vibration correction carrier 15 can becontrolled by a fine rolling operation. The ball bearings 104 aredisposed between the bottom of the first support bodies 151 and the topof second support bodies 141 and are driven.

In this case, as illustrated in FIG. 2, the rolling unit 100 includesthe one or more yoke units 103 disposed in the lens barrel carrier 14and spaced apart from each other so that they segment the regions 101 aand 101 b, 102 a and 102 b of the first and the second vibrationcorrection magnets 101 and 102.

That is, each of the yoke units 103 includes the first and the secondyokes 103 a and 103 b segmented and disposed so that they face theregions 101 a and 101 b, 102 a and 102 b, respectively, which aredivided based on the center A1 of the first and the second vibrationcorrection magnets 101 and 102.

In other words, one pair of the first and the second yokes 103 a and 103b is separated from each other and disposed in the respective regions101 a and 101 b of the first vibration correction magnet 101, and theother pair of the first and the second yokes 103 a and 103 b areseparated from each other and disposed in the respective regions 102 aand 102 b of the second vibration correction magnet 102.

The operation of the rolling unit 100 is described in more detail below.FIG. 3 is a perspective view illustrating that the vibration state ofthe lens barrel 13 is corrected on the basis of the X axis in the cameralens module 10 in accordance with various embodiments of the presentinvention, and FIG. 4 is an enlarged perspective view illustrating thatthe vibration state of the lens barrel 13 is corrected on the basis ofthe X axis in the camera lens module in accordance with variousembodiments of the present invention.

As illustrated in FIGS. 3 and 4, when an electric current is applied tothe automatic focus coil c1 of the AF driving unit, the lens barrel 13moves in a straight line along the optical axis. Accordingly, a focaldistance between the lens and the image sensor (not illustrated) isautomatically controlled.

When the lens barrel 13 moves in a straight line as described above andthus driving power is generated, the vibration correction carrier 15combined with the lens barrel 13 also moves in a straight line and thusgenerates rotatory power in one direction.

In this case, when an electric current is applied to the first vibrationcorrection coil c2 of the first vibration correction driving unit inorder to correct the vibration of the vibration correction carrier 15,electromagnetic force is generated by the first vibration correctionmagnet 101 and the first vibration correction coil c2. Theelectromagnetic force results in driving force for correcting thevibration of the lens barrel 13 in the X axis.

In other words, when the vibration correction carrier 15 is driven, thelens barrel 13 and the vibration correction carrier 15 together generaterotatory power.

In this case, since the first yoke 103 a is disposed to face the region101 a on one side of the first vibration correction magnet 101, themagnetic force of the first yoke 103 a and the first vibrationcorrection magnet 101 rotates the vibration correction carrier 15 onlyin one direction.

At the same time, since the second yoke 103 b is disposed to face theregion on the other side of the first vibration correction magnet 101,the magnetic force of the second yoke 103 b and the first vibrationcorrection magnet 101 rotates the vibration correction carrier 15 onlyin the other direction.

Accordingly, the first and the second yokes 103 a and 103 b center theposition of the vibration correction carrier 15 through magnetic forcethat reacts to the first vibration correction magnet 101 (i.e., providescentering).

FIG. 5 is a perspective view illustrating that the vibration state ofthe lens barrel 13 is corrected on the basis of the Y axis in the cameralens module 10 in accordance with various embodiments of the presentinvention, and FIG. 6 is an enlarged perspective view illustrating thatthe vibration state of the lens barrel 13 is corrected on the basis ofthe Y axis in the camera lens module 10 in accordance with variousembodiments of the present invention.

As illustrate din FIGS. 5 and 6, a principle that the camera lens modulecorrects the vibration state of the lens barrel 13 on the basis of the Yaxis is the same as the principle that the camera lens module correctsthe vibration state of the lens barrel 13 on the basis of the X axis.

That is, when the vibration correction carrier 15 is driven, the lensbarrel 13 and the vibration correction carrier 15 together generaterotatory power. At this time, the first yoke 103 a and the second yoke103 a try to generate rotatory power in opposite directions due to themagnetic force of the second vibration correction magnet 102.Accordingly, the position of the vibration correction carrier 15 iscentered.

That is, an existing camera lens module including a hand vibrationcorrection function is configured to have yokes correspond to the shapesof vibration correction magnets in a one-to-one manner. Accordingly, theexisting camera lens module is problematic in that the position of thelens is not centered because the driving unit of the lens drives thelens in a straight line in the direction of the optical axis and whenvibration is corrected, the lens is rotated only in one direction.

Accordingly, in the present embodiment, the camera lens module includesthe plurality of yoke units 103 configured to segment the regions 101 aand 101 b, 102 a and 102 b of the first and the second vibrationcorrection magnets 101 and 102. Accordingly, the vibration correctionmagnets and the yoke units 103 can easily center the position of thevibration correction carrier 15 through electromagnetic force inopposite directions.

In particular, the camera lens module in accordance with variousembodiments of the present invention may be applied as a camera lensmodule mounted on a mobile electronic device and configured to belightweight, short, and small in size.

The camera lens module of the various embodiments of the presentinvention is not limited to the aforementioned embodiments and drawings,and those skilled in the art will evidently appreciate that variousmodifications, additions and substitutions are possible withoutdeparting from the technical scope of the invention.

What is claimed is:
 1. A camera lens module, comprising: a vibrationcorrection carrier; a rolling unit disposed in parallel to a directionvertical to an optical axis and configured to support the vibrationcorrection carrier; a lens barrel carrier disposed on a side oppositethe vibration correction carrier based on the rolling unit; and a baseconfigured to mount the vibration correction carrier and the lens barrelcarrier on the base.
 2. The camera lens module of claim 1, furthercomprising vibration correction driving units disposed between thevibration correction carrier and the base and placed in at least twoedge regions of the camera lens module.
 3. The camera lens module ofclaim 2, wherein each of the vibration correction driving unitscomprises: at least one vibration correction magnet placed beside thevibration correction carrier, and a yoke unit corresponding to thevibration correction magnet.
 4. The camera lens module of claim 3,wherein: the yoke unit comprises a plurality of segmented yokes, and thesegmented yokes are disposed in respective regions divided based oncenters of the vibration correction magnet in such a way as to face eachother.
 5. The camera lens module of claim 3, wherein each of thevibration correction driving units comprises a vibration correction coiland a vibration correction position sensor disposed in an edge region ofthe base and supported to face the vibration correction magnet.
 6. Thecamera lens module of claim 5, wherein each of the vibration correctiondriving units further comprises a back yoke provided in one surface ofan edge region of the vibration correction carrier and closely attachedto the vibration correction magnet.
 7. The camera lens module of claim1, wherein the vibration correction carrier comprises: a hollow bodyconfigured to have a lens barrel received along the optical axis; one ormore first support bodies protruded from a bottom of the hollow body inan outer circumference direction and spaced apart from each other; andone or more first apertures disposed between the first support bodies.8. The camera lens module of claim 5, further comprising a perpendicularunit extended from the edge region of the base in a direction of theoptical axis and configured to have a triangular prism shape.
 9. Thecamera lens module of claim 5, wherein the vibration correction positionsensor is placed in a support at a back of the vibration correction coiland configured to face the vibration correction magnet through aninternal space of the vibration correction coil, or the vibrationcorrection position sensor is received in the internal space of thevibration correction coil and configured to face the vibrationcorrection magnet.
 10. The camera lens module of claim 1, furthercomprising an Automatic Focus (AF) driving unit disposed between thebase and the lens barrel carrier and configured to move the lens barrelcarrier along the optical axis, wherein the AF driving unit comprises:an automatic focus magnet provided in a first surface of the lens barrelcarrier; an auxiliary base provided in one surface of the base andconfigured to face the automatic focus magnet; an automatic focus coiland an automatic position sensor provided in the auxiliary base anddisposed to face the automatic focus magnet; and a camera lens moduleconfigured to comprise an AF flexible circuit provided in the auxiliarybase.
 11. The camera lens module of claim 1, wherein the rolling unitcomprises a plurality of ball bearings disposed between the lens barrelcarrier and the vibration correction carrier in such a way as to come incontact with the lens barrel carrier and the vibration correctioncarrier and configured to support the vibration correction carrier.